Audi Q8 vs Porsche Cayenne

The Audi Q8 starts from $143,415 before on-road costs, while the Porsche Cayenne opens at $138,800. That makes the Porsche Cayenne the more affordable entry point by $4,615.

Once you factor in stamp duty, registration, CTP insurance, and dealer delivery, expect to add roughly 8-12% on top of the RRP depending on your state. That puts estimated driveaway prices in the ballpark of $157,757 and $152,680 respectively.

Over 5 years, the running costs favour the Audi Q8 by roughly $4,700 in fuel alone.

ANCAP safety ratings have not been published for both models yet. We will update this section when crash test results are available.

The Audi Q8 features a 10.1-inch touchscreen paired with a 12.3-inch digital dash, while the Porsche Cayenne gets a 12.3-inch display and 12.6-inch instruments. Apple CarPlay and Android Auto are standard across both.

The Audi Q8 stands out with wireless Apple CarPlay/Android Auto, wireless charging, ventilated seats, Bang & Olufsen audio and ambient lighting that you will not find on the Porsche Cayenne. The Porsche Cayenne counters with Apple CarPlay and BOSE audio. Which feature set matters more depends on your daily routine and priorities.

The Audi Q8 uses a Diesel MHEV producing 210kW and 600Nm of torque, sent through a automatic to a AWD layout. It covers the 0-100km/h sprint in 6.1 seconds.

The Porsche Cayenne responds with a Petrol making 260kW and 500Nm, paired to a 8-speed auto driving all four wheels. It gets to 100km/h in 6 seconds.

The Porsche Cayenne has the clear power advantage at 260kW vs 210kW. In the real-world sprint, the Porsche Cayenne is 0.1s quicker. For most buyers, the way each car feels day-to-day matters more than outright acceleration.

The Audi Q8 measures 5,006mm long on a 2,995mm wheelbase, 76mm longer than the Porsche Cayenne at 4,930mm (2,895mm wheelbase). The longer wheelbase on the Audi Q8 generally means more rear legroom.

Boot space is 605L in the Audi Q8 and 698L in the Porsche Cayenne, giving the Porsche Cayenne a 93L advantage.

For towing, the Porsche Cayenne leads with a 3,500kg braked capacity vs 3,500kg. That 0kg difference matters if you regularly hitch up.

Based on 15,000km of annual driving, fuel costs roughly $2,024/year for the Audi Q8 and $2,964/year for the Porsche Cayenne. That is a $940 annual difference in favour of the Audi Q8.

Estimated annual total: $2,024 (Audi Q8) vs $2,964 (Porsche Cayenne). The Audi Q8 saves you roughly $940 per year in total ownership costs. Use our Fuel Cost Calculator to estimate based on your driving.

Warranty: 5 years / 999,999km (Audi Q8) vs 3 years / 999,999km (Porsche Cayenne). The Audi Q8 has longer coverage.